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Lekcja – Wprowadzenie do klas w Pythonie

class Rectangle:

    def __init__(self, lenght, height):
        self.length = lenght
        self.height = height

    def field(self):
        return self.length * self.height        

    def __repr__(self):
        return f"<Rectangle L:{self.length} H:{self.height}>"



r1 = Rectangle(5, 4)

print(f"r1 - length {r1.length}, height {r1.height}, field {r1.field()}")

r2 = {
    'length': 5,
    'height': 4
}

def field_of_rectangle(r):
    return r['length'] * r['height']

print(f"r2 - length {r2['length']}, height {r2['height']}, field {field_of_rectangle(r2)}")

print(r1)
print(r2)

Lab

 
import webbrowser

class Link:

    def __init__(self, name, address, topic):
        self.name  = name
        self.address = address
        self.topic = topic

    def open_it(self):
        return webbrowser.open(self.address)      

    def __repr__(self):
        return f"<{self.topic}: {self.name}>"

link_list = [
    Link('Graphs', 'https://en.wikipedia.org/wiki/Graph_theory', 'Math'),
    Link('Graph coloring', 'https://en.wikipedia.org/wiki/Graph_coloring', 'Math'),
    Link('The best search engine', 'https://www.bing.com','Fun')
]

for link in link_list:
    print(link)

link_list[-1].open_it()